Ceiling construction



May 13, 1930.

w. REEL CEILING CONSTRUCTION Filed Feb. 1, 1926 INVENTOR. Y Herbert W fed B ATTORNEY.

Patented May 1 3, 1930 stir HERBERT w. REEL, or CHICAGO, rumors, AssIeiion igeazoi COMPANY, or on rcne nmnois, 'aoozaroan rronjor ILLI oIs; c i

CEILING- CONSTRUCTION Application filed February This invention relates to improvement in building construction, but more particularly to the production-of a monolithic or cast floor, roof, or ceiling which is continuous in 5,form under the supporting beams or floor framing, or it may bethatthe ceiling is supported directly by theroof supports One of the principal objects of the inven :tion is to provide a ceiling ofthis construction which provides. a smooth, :finished under surface which may be decorated directly without the application of plaster,'which is easily erected, comparatiyelyjlightin weight, fireproof, and an excellent insulator.

In its preferred form, this ceiling is a thin continuous layer ofplastic or cementitious material, which is cast or poured and allowed to set on a bottom form, with a reinforcing supporting members with the reinforcing fabric held in placethereon by the hooks; Fig. 3 is a sectional View showing the forms in place for casting a ceiling of this improved construction; Fig. 4 is a perspective of one of the reinforcing net work'supporting hooks; and Fig. 5 shows a twisted tie wire instead of a supporting hook.

to provide a continuous ceiling suspended below or in contact with a number of supports,

either the supports for a floor or for a roof.

. This ceiling being light in weight does not re 1 quire heavy forms or supports, and being reinfor'ced, it can be supported from the floor or roof beams themselves without any additional truss or supporting means, and when the ceiling is set, it presents a smooth and 5 continuous surface on its'underside. Plaster In carrying out this invention it is-desired 1,1926. Serial No. 85,075.

ro UNITED cs'rnrnsexrstiir wallboard which adheres to thelayer of plastic material may be used to form a permanent partjofthe ceiling at the under side-thereof,

or it'may beomitted entirely.

v In carrying out this inv'enti on a plurality of roof beams or supports 1' are providedin parallel relation to each other, immediately below which the ceiling is desiredf Areinforcing net work 2 is suspended directly below these beams 1 by means of hooks'3, which are designed to extend below the network engaging one or morewiresthereof,.with the a 7 upper ends ie-adapted to be bent around or over the upper edges of the beams 1 so'that,

the net work can be held in, place in any d'esired location or spacing below the beams;

Theceiling proper consists of plastic materi-al 5 containing gypsum or any other suitable'cementitious materiahwhich is applied in a thin layer-belowthe beamsl to imbed the net work 2 therein so th'at when the plastic material becomes set itiwillform a continuous or monolithic slab extendin below the beams D I v i 7 which mayor may not abut them onthe'underside.

I A suitable composition for the plastic material is found to be approximately '100 pounds of gypsum first settle stucco, to which is added about12 pounds ofwood shavings and thelnecessary amountof water. This plastic mass is poured toimbed the reinforcing net work and is supported in place until the plastic material, becomes su'tficiently set. It is obvious, of course, that other cementitious materials may be substituted and that other aggregate, such as Cinders, sand, or the like, may be included with the plastic material to give it different required properties.

requires that abottomform 6 eprovided, .which ispreferably supported directly below the beams '1 ata distan'ce from the'lower edge of the supports equal tothe thickness ofthe ceiling'desired. This bottom form maybe builtup ofjboards or ofplaster wallboard 12 supported upon boards, and it is supported by cross beams 7 at the bottom, through which are inserted rods 8. The upper ends of these rods are insertedthrough the formcboards,

the plaster wallboards, if they are used, and

The actual pouring of'afceili'n of this kind.v

through cross beams 9 placed on top of the supporting beams 1. The ends ofthe rods 8,

are threaded to provide for the nuts 10 and Washers 11 by means of which the bottom form 6 is held in place and so that it can be adjusted in height with respect tothe lower edges of the beams 1.- g

Thereinforcing 2 maybe placed in position below the beams 1 either before or after thebottom form is inrplace, Whichever is more convenient,,the hooks or supporting members i 3 then applied to the reinforcing andsecured to the beams 1, and then the plastic'mat'erial is poured upon the bottom form and spread in a thin layer to imbedithe reinforcing therein.

- Preferably, the plastic'layer is thick enough only to abut or engage the lower edgeof the beams I'so thatit is held tightly against the beamsby the reinforcing and the supporting Contact with the beams.

means which engages over the topof the beams. The bottom formj'6 may also be sus pended at a distance below the "beams 1, if.

desired, and a layer ofplastic material'spread thereonimbedding the net work, entirely below the lower edges of the beams-1, but it is believedpreferable to have the ceiling, in

The .wallb0ard'12 may bebuilt up-as a part of the bottom form'6, supported loosely by the formboards, i or it may be placed upon the bottom form after it is constructed. This wallboard adheres and bonds to the mono-' lithic slab cast upon it'and forms a smooth, pleasing, continuous'under surface. Either the wallboard surface, or the monolithic slab,

ifthe wallboard is omitted, may be treated as anyother wallsurface, but as it makesla smooth, finished surface in either form, no further treatment is necessary.

In order properly to space the'bottom of the form 6 or the wallboardheld thereby below the. supporting beamsa number of spacer blocks 14: may be placed at intervals below the beams 1. These blocks prevent the forms reinforcing suspended therefrom, hardened plastic cementitio'usematerial in contact with under'surifaces of metal -beams or. channels 'while embedding the reinforcing material, 1-plasterboardspaced beneath the metal or channel members, and a definite thickness of cementitious slabzbounded thereto.

2. In a fireproof ceiling construction, in combination metal beams or channels, a hard ened plastic 'cementitious slab containing embedded .wire reinforcing "fabric in. contact with but suspended ther'efromfand governed .in thickness by retained spacers disposedbe tween theundersurfaces of the metalbeams or channels and the slab undersur-face. v

'3. In a fireproof ceiling construction, in combinat on metal beams or channels, wire reinforcing suspended therefrom, hardened rehydrated calcium sulphate in contact .With undersurfacesiofmetal beams or channels while embedding the reinforcing material, plasterboard spaced beneath the metal or channel members and a definitethickness of rehydrated calcium sulphate slab bonded thereto r 4. "In a fireproofceiling constructiom'in combination metal beams or channels, a'hardenedrehydrated calcium sulphate slab contairiing embedded wire reinforcing fabric in contact therewith but -suspended therefrom, and governed in thicknessby retained spacers V disposed between the 'undersurfaces of the metal beams or channels'and the slab undersurface.

from being drawn too close to the beams, and i also form-a gauge for the thickness of the r slab belowthe beams. The blocks are made of I gypsum, or the same material as the slab,

inserted and these holes are then filled with suitable cement, so gthattlie aunderside ofthe preferably wedge shaped, and left in the ceile ing, but if desired they maybemade of wood or some other material and removed before the ceilingisfcomplete and ,the openings filled o' Instead ofthe hooks 4:, a number offastening wires 13 maybe bent aroundthe supportingbeams 1, engaging and holding therein- -f rcing 2, and the ends twisted :together, as shown in Fig.- 5. 1 r

- When this monolithic ceiling slab has be- ;come sufficiently' setor hardened, the bottom form support 6 is removed by disconnecting -the rods 8 and removing them. @This will leavevsmall holes where the rods have been 

